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Abstract
Quartz has been cited by the international agency for research on cancer as a human carcinogen. Exposure to quartz containing aerodynamically respirable aerosols is possible during the air Rotary abrasion to remove the adhesive from teeth following orthodontic bracket debond. A previous study characterized the particle size distribution of composite adhesive dust within an aerosol generated by air rotary abrasion of quartz filled adhesives using an 8 stage impactor device. The purpose of this study was to one determine the effectiveness of dental masks and removing aerodynamically respirable dust created by grinding dental composite adhesives and two to determine the effectiveness and accuracy of the eight stage impactor in filtering and separating dust particles according to size fractions.